Merge tag 'v0.3.3' into 0.3.x

v0.3.3 Release
DEV-114 | release v0.3.3: update for next version: v0.3.4
DEV-116 | problems related to virtualbox guest addition; virtualenvs directory permission
Merge remote-tracking branch 'phuonglm/bug/dev-116-problems_related_to_virtualbox_guest_addition' into 0.3.x
DEV-121 | No "source" of install_method for mongodb recipe
Merge remote-tracking branch 'phuonglm/0.3.x' into 0.3.x
DEV-123 | release 0.3.4
Merge branch 'tasks/DEV-123-release-0.3.4' into releases/0.3.4
Merge tag 'v0.3.4'

v0.3.4 Release